Device for cooling high capacity transmitter tubes



Dec. 10, 1963 K. SCHUBERT ETAL v 3,113,614

DEVICE FOR-COOLING HIGH CAPACITY TRANSMITTER TUBES Filed Aug. 4, 1959 2 Sheets-Sheet 1 Fig.1

Dec. 10, 1963 K. SCHUBERT ETAL 3,113,614

DEVICE FOR COOLING HIGH CAPACITY TRANSMITTER TUBES Filed Aug. 4, 1959 2 Sheets-Sheet Fig.2

United States Patent 1 3,113,614 DEVICE FOR COOLING HIGH CAPACITY TRANSMITTER TUBES Kurt Schubert and Walter Brill, Berlin-Charlottenburg,

Germany, assignors to Siemens & Halske Aktieng-esellschaft, Berlin and Munich, Germany, a corporation of Germany Filed Aug. 4, 1959, Ser. No. 831,545

Claims priority, application Germany Aug. 20, 1958 4 Claims. (Cl. 165--67) The invention is concerned with a device for cooling high capacity tubes used in wireless transmitters and the like, employing a potlike cooling container, generally referred to as a cooling pot, which is continuously supplied with a cooling medium.

The object of the invention is to provide for quick and reliable exchange of tubes.

In a known coaxial line arrangement, the tubes disposed in the flight of the line are made easily exchangeable, for example, by making parts of the coaxial line extending near the tubes pivotally displaceable about an axis lying outside of the line axis. -It is moreover known to pivotally arrange, for example, mounting plates supporting structural elements disposed above tubes, so as to facilitate the exchange of the tubes.

The exchange of heavy high capacity transmitter tubes arranged within cooling pots which are continuously supplied with cooling medium introduces considerably greater difllculties, first, because the space required for the corresponding parts is often blocked by other structural elements and, further, because the fluid-cooled tubes (cooled by liquid or evaporation) must be removed from their cages. Only very short time intervals are in case of wireless transmitters permissible for interrupting operation for the purpose of exchanging tubes and, so far as possible, no time additional to that required for disconnecting electrical terminals must therefore be expended for discon necting the cooling conduits. The disconnection of water conduits or steam conduits has moreover the disadvantage that cooling water or condensation water may flow oil and wet electrical elements, thereby causing functional disturbances and corrosion.

As indicated before, the object of the invention is to effect, even in the case of tight space conditions or in connection with heavy high capacity tubes, -a quick and reliable tube exchange while preventing discharge of cooling medium so as to avoid contamination of apparatus parts.

This object is according to the invention realized by the provision of means for pivotally mounting the cooling pot for rotation together with the conduit means for the cooling medium connected therewith, from the operating position of the tube into another servicing position in which the tube is readily accessible for unhindered manipulation thereof and can be readily exchanged without requiring disconnection of the conduits for supplying the cooling medium.

In accordance with an embodiment of the invention, the conduit for the cooling medium advantageously may be carried concentrically through a rotatable post carrying the cooling pot, and is in its connected position rotatable together with the post and the cooling pot. A hollow or tubular rotatable post through which the cooling medium can be directly conducted is particularly suitable for this purpose.

Another possibility is to dispose the cooling conduit outside the rotatable post and along its journal which conduit, in its connected condition, is rotatable with the post and the cooling pot.

Rotatable gaskets or seals are preferably employed for the connection of the conduit for the cooling medium to the pivotal device, so as to effect easy rotation thereof upon displacement of the cooling pot.

With a device according to the invention, the cooling pots may be provided within a transmitter housing and may be rotated from their operating positions outwardly of the housing where there are no disturbing structural elements above the cooling pots, thus permitting the maintenance person to stand next thereto and effect a tube exchange in comfortable and reliable manner. No conduits for the cooling need be disconnected upon rotating the cooling pots, thus preventing outflow of cooling medium and therewith detrimental effects on the functioning of the structural parts involved.

As contrasted with known fixedly disposed conduits for the cooling medium, the corresponding conduits are according to the invention connected by means of rotatable seals or gaskets along the rotatable post.

The rotatable post for the cooling pot is suitably made of insulating material, preferably ceramic material, thus affording at the same. time an insulated mounting for the cooling pot. The rotatable post made of insulating material, the water column contained therein, may moreover form a water resistance for the anode direct voltage and partially for the high frequency voltage.

At the bottom of the rotatable post, there may be provided a connecting head constructed as a rotary seal and including an insulating tube extending parallel to the rotatable post, which may operate as a conduit for conducting the cooling medium and also operate as a 'water resistance. The steam conducting arm of an evaporation cooling pot may be constructed as a rotatable arm with a suitable bushing for receiving the rotatable post. The cooling pot, in the embodiment illustrated, held in operating position by a strap binding provided with a quick release latch, and such binding may at the same time serve as an electrical circuit terminal.

The various objects and features of the invention will be brought out in the course of the description of embodiments thereof which will be rendered below with reference to the accompanying drawings.

In the drawings:

FIG. .1 shows an embodiment, partially in section, comprising a conduit for conducting the cooling medium, such conduit extending concentrically through the rotatable post of the device; and

FIG. 2 illustrates an embodiment in which the conduit conducting the cooling medium extends laterally of and alongside the rotatable post and being rotatable therewith.

Referring now to FIG. 1, there is provided a cooling pot 1 for the high capacity tube 12, such pot being by means of a hollow arm 1a fixedly connected with the rotatable post 3. A flattened portion 4 on the rotatable post secures the arm 1a and the cooling pot in a predetermined position with respect to the post. The rotatable post is journalled in one or more journals 5 which arev dimensioned in accordance with the forces to be encoun tered; Respectively below and above the rotatable post and coaxially therewith are provided conduits 6 and 7 for circulating the cooling medium into which extends the anode 2a of the tube 2. The minimum spacing between the journal 5 and the fastening 8 aligned with the bottom of the cooling pot depends upon the anode voltage .to be used. A clamp strap 9 with a quick release latch may be provided to hold the cooling pot in operating position and, at the same time, may serve as a terminal for an electrical circuit.

A rotatable seal 10 permits flow of the cooling medium from a fixed conduit 11, suitably supported by a bracket 11' (also shown in FIG. 2.), through the rotatable tubular post 3 irrespective of the angular position thereof. The rotatable post with the cooling medium therein may, at the same time, form a fluid or water resistance. A conduit 12 provides means for conducting the cooling medium from the rotatable post to the cooling pot, such conduit being arranged so that it can be inserted into the cooling pot. Pipe gaskets can therefore be exchanged Without dismounting other parts.

The liquid coolant is fed to the cooling pot 1 through the conduit 12, the coolant filling the pot 1 to a level permitting the downwardly extending anode 2a of the high capacity transmitter tube 2 to be immersed in the liquid coolant, the heat radiated by the anode causing the coolant to be evaporated. The steam of the evaponated coolant is conducted through the hollow arm 1a and coupling 7 for recirculation to the pot 1 through the conduits 1i and 1'2.

In the embodiment according to FIG. 2, there is provided a connecting head 13 which is secured to the rotatable post 3. A flattened port-ion 14 on the rotatable post secures the connecting head 13 in :a predetermined position with respect to the cooling pot 1. A rotatable seal 15 permits the fiowv of the cooling medium from the fixed conduit 11 through the connecting head independent of the position of such connecting head. An insulating tube 16 extends from the connecting head to the cooling pot, such insulating tube extending outside of and alongside of the rotatable post 3 and along the journal means thereof, such tube being in connected condition rotatable with the rotatable post 3 and the cooling pot 1. This insulating tube with the cooling medium contained therein forms a fluid resistance.

Changes and modifications may be made the scope and spirit of the appended claims which define what is believed to be new and desired to have protected by Letters Patent.

No claim:

1. A device [for cooling a high capacity tube for use in wireless transmitters and the like, comprising a potlike container having an opening in the top thereof through which a part of the tube which is heated in the operation thereof may extend and be enclosed by the container, means for pivotally mounting said container to permit rotation thereof about a vertical axis 'laterally spaced from from the container, whereby the latter may be swung horizontally out of the operating position of the tube into a servicing position in which the tube is accessible for unhindered manipulation thereof for exchange purposes and the like, conduit means forming an inlet through which a cooling medium may be supplied to said container, and conduit means forming an outlet from said container for such cooling medium, both of said conduits being constructed for rotation with said container about said axis, whereby said conduits may be continuously connected to the container, one of said conduits forming supporting means for the container.

2. A device as defined in claim 1, wherein at least one of said conduits has a portion, concentric with said axis, which forms the supporting means for said container.

3. A device as defined in claim 2, wherein each of said conduits has a portion concentric with said axis.

4. A device as defined in claim 2, wherein one of said conduits has a portion which is spaced from said axis and extends substantially parallel thereto.

References Cited in the file of this patent UNITED STATES PATENTS 1,206,670 Ohairnberlin Nov. 28, 19:16 1,900,013 Gebhard Mar. 7, 1933 2,056,603 Eirich et al. Oct. 6, 1936 2,083,970 Walter June 15, 1937' 2,190,584 Feld-meier et a1 Feb. 13, 1940 2,755,795 Webber July 24, 1956 2,950,904 Groen Aug. 30, 1960 

1. A DEVICE FOR COOLING A HIGH CAPACITY TUBE FOR USE IN WIRELESS TRANSMITTERS AND THE LIKE, COMPRISING A POTLIKE CONTAINER HAVING AN OPENING IN THE TOP THEREOF THROUGH WHICH A PART OF THE TUBE WHICH IS HEATED IN THE OPERATION THEREOF MAY EXTEND AND BE ENCLOSED BY THE CONTAINER, MEANS FOR PIVOTALLY MOUNTING SAID CONTAINER TO PERMIT ROTATION THEREOF ABOUT A VERTICAL AXIS LATERALLY SPACED FROM THE CONTAINER, WHEREBY THE LATTER MAY BE SWUNG HORIZONTALLY OUT OF THE OPERATING POSITION OF THE TUBE INTO A SERVICING POSITION IN WHICH THE TUBE IS ACCESSIBLE FOR UNHINDERED MANIPULATION THEREOF FOR EXCHANGE PURPOSES AND THE LIKE, CONDUIT MEANS FORMING AN INLET THROUGH WHICH A COOLING MEDIUM MAY BE SUPPLIED TO SAID CONTAINER, AND CONDUIT MEANS FORMING AN OUTLET FROM SAID CONTAINER FOR SUCH COOLING MEDIUM, BOTH OF SAID CONDUITS BEING CONSTRUCTED FOR ROTATION WITH SAID CONTAINER ABOUT SAID AXIS, WHEREBY SAID CONDUITS MAY BE CONTINUOUSLY CONNECTED TO THE CONTAINER, ONE OF SAID CONDUITS FORMING SUPPORTING MEANS FOR THE CONTAINER. 